Composite cradle for use with coil of air core reactors

Abstract

A cradle to mount a coil of an electric power line reactor is provided. The cradle includes a plurality of a pair of opposing arms. Each arm has a free end and an end coupled to a hub. The free end of each arm is configured to be coupled to a bearing assembly. The cradle further includes a plurality of outer members. The free ends of each pair of adjacent arms of the plurality of a pair of opposing arms are coupled to a corresponding outer member of the plurality of outer members. At least one outer member of the plurality of outer members is formed from a dielectric material and the plurality of a pair of opposing arms being formed from a material that enables the cradle to support weight of the coil.

1 . A cradle to mount a coil of an air core reactor, the cradle comprising:
 a central hub;   a plurality of radiating arms extending radially away from the central hub, each arm having a free end and an end coupled to the central hub, wherein the coil having structural loads and the free end of each arm of the plurality of radiating arms having an interface that is configured to be coupled to the coil; and   a plurality of outer members, wherein the free ends of each pair of adjacent arms of the plurality of radiating arms are coupled to a corresponding outer member of the plurality of outer members,   wherein at least one outer member of the plurality of outer members is formed from a dielectric material and the plurality of radiating arms being formed from a material that enables the cradle to maintain the structural loads of the coil   wherein the corresponding outer member of the plurality of outer members is coupled to the respective free ends of a corresponding pair of adjacent arms of the plurality of radiating arms at a point being offset from the free ends of each pair of adjacent arms of the plurality of radiating arms, and   wherein the interface is located at an intersection of a corresponding radiating arm of the plurality of radiating arms and a pair of respective outer members of the plurality of outer members.   
     
     
         2 . The cradle of  claim 1 , wherein each arm of the plurality of radiating arms formed from a dielectric material. 
     
     
         3 . The cradle of  claim 2 , wherein the dielectric material is from a group consisting of fiber glass composite and porcelain. 
     
     
         4 . The cradle of  claim 1 , wherein the plurality of radiating arms and the plurality of outer members except the at least one outer member of the plurality of outer members formed from a ferrous material. 
     
     
         5 . The cradle of  claim 1 , wherein the plurality of radiating arms and the plurality of outer members including the at least one outer member of the plurality of outer members formed from a non-ferrous material. 
     
     
         6 . The cradle of  claim 5 , wherein the non-ferrous material is from a group consisting of fiber glass composite and porcelain. 
     
     
         7 . (canceled) 
     
     
         8 . The cradle of  claim 1 , wherein the corresponding outer member of the plurality of outer members is coupled to the respective free ends of the corresponding pair of adjacent arms of the plurality of radiating arms such that a rotation of the cradle with respect to an axis parallel to a horizontal plane of the cradle is substantially eliminated. 
     
     
         9 . The cradle of  claim 8 , wherein the plurality of radiating arms formed from a non-ferrous material and the plurality of outer members formed from a dielectric material. 
     
     
         10 . The cradle of  claim 1 , wherein the corresponding outer member of the plurality of outer members is coupled to the respective free ends of a corresponding pair of adjacent arms of the plurality of radiating arms such that a rotation of the cradle with respect to an axis parallel to a horizontal plane of the cradle is substantially eliminated. 
     
     
         11 . The cradle of  claim 1 , wherein the plurality of radiating arms formed from a non-ferrous material and the plurality of outer members formed from a dielectric material. 
     
     
         12 .- 20 . (canceled) 
     
     
         21 . A cradle to mount a coil of an air core reactor, the cradle comprising:
 a central hub;   a plurality of radiating arms extending radially away from the central hub, wherein each arm having a free end and an end coupled to the central hub, wherein the coil having structural loads;   a plurality of outer members, wherein the free ends of each pair of adjacent arms of the plurality of radiating arms are coupled to a corresponding outer member of the plurality of outer members; and   an interface located at a point being offset from the free end of each arm of the plurality of radiating arms and radially away from the central hub, wherein the interface is configured to be coupled to the coil.   
     
     
         22 . The cradle of  claim 21 , wherein at least one outer member of the plurality of outer members is formed from a dielectric material and each arm of the plurality of radiating arms formed from a dielectric material that enables the cradle to maintain the structural loads of the coil. 
     
     
         23 . The cradle of  claim 22 , wherein the dielectric material is from a group consisting of fiber glass composite and porcelain. 
     
     
         24 . The cradle of  claim 21 , wherein the plurality of radiating arms and the plurality of outer members except the at least one outer member of the plurality of outer members formed from a ferrous material. 
     
     
         25 . The cradle of  claim 21 , wherein the plurality of radiating arms and the plurality of outer members including the at least one outer member of the plurality of outer members formed from a non-ferrous material. 
     
     
         26 . The cradle of  claim 21 , wherein the corresponding outer member of the plurality of outer members is coupled to the respective free ends of a corresponding pair of adjacent arms of the plurality of radiating arms at a point being offset from the free ends of each pair of adjacent arms of the plurality of radiating arms. 
     
     
         27 . The cradle of  claim 21 , wherein the corresponding outer member of the plurality of outer members is coupled to the respective free ends of the corresponding pair of adjacent arms of the plurality of radiating arms such that a rotation of the cradle with respect to an axis parallel to a horizontal plane of the cradle is substantially eliminated. 
     
     
         28 . The cradle of  claim 1 , wherein the corresponding outer member of the plurality of outer members is coupled to the respective free ends of a corresponding pair of adjacent arms of the plurality of radiating arms such that a rotation of the cradle with respect to an axis parallel to a horizontal plane of the cradle is substantially eliminated. 
     
     
         29 . A cradle to mount a coil of an air core reactor, the cradle comprising:
 a plurality of arms;   a plurality of outer members coupled to the plurality of arms; and   an interface located at an intersection of a corresponding arm of the plurality of arms and a pair of respective outer members of the plurality of outer members,   wherein the interface is configured to be coupled to the coil,   wherein the coil having structural loads, and   wherein at least one outer member of the plurality of outer members is formed from a dielectric material and each arm of the plurality of radiating arms formed from a dielectric material that enables the cradle to maintain the structural loads of the coil.   
     
     
         30 . The cradle of  claim 29 , wherein the dielectric material is from a group consisting of fiber glass composite and porcelain.